/*
 * Copyright 2015 GenerallyCloud.com
 *  
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *  
 *      http://www.apache.org/licenses/LICENSE-2.0
 *  
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.generallycloud.nio.balance;

public class FacadeInterceptorImpl implements FacadeInterceptor {

	private int	interceptorLimit;

	// 1CPU limit
	private int	globalLimit;

	private int	check	= 0;

	private long	next_check_time;

	public FacadeInterceptorImpl(int interceptorLimit, int globalLimit) {
		this.globalLimit = globalLimit;
		this.interceptorLimit = interceptorLimit;
	}

	@Override
	public boolean intercept(BalanceFacadeSocketSession session, BalanceReadFuture future) throws Exception {

		long now = System.currentTimeMillis();

		if (now > next_check_time) {
			next_check_time = now + 1000;
			check = 0;
			return session.overfulfil(interceptorLimit);
		}

		return ++check > globalLimit || session.overfulfil(interceptorLimit);
	}

}
